Digital Temperature Controller for Freshwater and Saltwater Aquariums with Adjustable
★★★★★4.95,185 ratings|6K+ sold
$44.99 USD
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The Hanging Cooling Fan For Aquarium is a great way to keep your fish cool and your aquarium looking good. This fan is easy to install and is adjustable to fit most aquariums.
Features:
The appearance is elegant, beautiful, and generous;
Wall-mounted design, easy to use, safe, and stable;
Adopt DC direct current to ensure safety;
The wind is strong, and depending on the weather and indoor temperature, the temperature can be reduced by 2-4°C
Two-speed air volume adjustment
Details:
Scope of application: aquarium fish tank
Voltage: 110v-240v
Output: DC5V, DC12V
Power: 2.2W 3.5W
Tank length: 20-40CM/30-60CM
More About The Product Accurate Temperature: The precise temperature probe continuously and securely measure the water's current temperature. For tortoise aquariums, a minimum water level can also be used.
Safe To Use: The safety thicker quartz glass tube is resistant to high temperatures and explosion-proof. Injection molding is used to fill the shell with plastic before it is sealed, fully eliminating any potential leakage risks.
Adjusts Quickly:Quickly raises the water's temperature, compact size, and instantaneous heating make it ideal for heating small and medium-sized fish tanks. For operations requiring only one key cycle, the external controller is practical.
Frequently Asked Questions
The description specifically describes a Hanging Cooling Fan for aquariums that reduces water temperature by 2-4°C. This is a cooling device, not a heater. Despite the product title mentioning 'temperature controller,' this product only cools — it does not heat. Do not use it to warm cold water.
The listing states the tank length should be 2X (the unit appears cut off). The 2-4°C cooling effect is most reliable in smaller tanks (under 100L). In larger tanks (200L+), the same fan will produce less than 1°C reduction. For large tanks, multiple fans or a chiller unit are needed.
Small (White/Black): 2.2W output. Large (White/Black): 3.5W output. The larger unit moves more air and is more effective at cooling. For tanks over 60L, the Large version is recommended for meaningful temperature reduction.
Yes, aquarium cooling fans accelerate evaporation significantly — sometimes 20-40% more than a closed tank. Evaporation also concentrates dissolved minerals, raising hardness. Daily top-offs with dechlorinated water are typically required when running a cooling fan continuously.
Yes, the 110v-240v range is universal and compatible with US (110v/120v) outlets, UK (240v), and EU (220v-240v) outlets. No voltage converter is needed. However, verify the plug type (Small White/Black vs Large White/Black) matches your regional outlet format.
Most small aquarium fans run at a noticeable hum on high speed. Low speed reduces noise by approximately 30-40% but also reduces cooling effect proportionally. For bedroom tanks where noise matters, run on low speed at night and high speed during the day.
